Epidemiological Aspects of Keratoconus at the Mohammed V Military Instruction Hospital in Rabat
DOI:
https://doi.org/10.55677/IJCSMR/V2I7-02/2022Keywords:
keratoconus, epidemiolgyAbstract
Introduction: Keratoconus is a non-inflammatory corneal dystrophy or degeneration, manifested by a forward deformation of the cornea, normally in the center, usually appearing in adolescence and causing, if it progresses, a decrease in visual acuity due to significant irregular and variable astigmatism.
Materials and methods: This is a retrospective study carried out at the Military Hospital of Rabat on 76 patients with keratoconus, followed in consultation between January and December 2021.
Results: Were included 83 patients (i.e. 166 eyes) with a confirmed diagnosis of keratoconus or mild form of keratoconus.
The average age of patients was 27.2 years, ranging from 13 to 65 years, 59.5% were male.
Allergic conjunctivitis was the most frequently found association. The most reported functional signs: visual blurring, glare, decreased visual acuity. 54% of eyes had visual acuity ≤1/10, refraction found myopic astigmatism in 58% of cases.
Discussion: Keratoconus is a non-inflammatory disease characterized by thinning and bulging of the cornea.
Its incidence is estimated between 50 and 230 per 100,000 inhabitants. The average age of discovery is between 10 and 20 years old. Several classifications are available, however there is no international consensus to classify keratoconus.
On the margins of these classifications, the terms “suspicious”, “rough” or “beginner” Keratoconus have appeared. If a beginner keratoconus is a proven form, the terminologies of suspect vary according to the authors.
Conclusion: The natural history of keratoconus is variable, this pathology has benefited from many diagnostic and therapeutic advances.
Hopes are placed in the exploration of corneal biomechanics.
References
- Maadane, A., Boutahar, H., Jomaa, R., Bourakba, S., Chariba, S., & Sekhsoukh, R. (2019). Kératocône: étude épidémiologique prospective. Journal de la Société Marocaine d’Ophtalmologie, 0(28), 66-72.
- Moineau N, et al. Etude rétrospective concernant le Crosslinking cornéen accéléré avec haute irradiance dans le cadre du traitement du kératocône. J Fr Ophtalmol (2017).
- Zadnik K, Barr JT, Edrington TB, Everett DF, Jameson M, McMahon TT, et al. Baseline findings in the Collaborative Longitudinal Eva-luation of Keratoconus (CLEK) Study. Invest Ophthalmol Vis Sci 1998;39:2537—46.
- Kennedy RH, Bourne WM, Dyer JA. A 48-year clinical and epide-miologic study of keratoconus. Am J Ophthalmo 1986;101:267—73.
- Malet F. Les lentilles de contact. Rapport SFO 2010;2010:1052.
- Sharma R, Titiyal JS, Prakash G, Sharma N, Tandon R, Vajpayee RB. Clinical profile and risk factors for keratoplasty and develop¬ment of hydrops in north Indian patients with keratoconus. Cornea 2009;28:367-70.
- Ertan A, Muftuoglu O. Keratoconus clinical findings according to different age and gender groups. Cornea 2008;27:1109—13.
- Wagner H, Barr JT, Zadnik K. Collaborative Longitudinal Evalua¬tion of Keratoconus (CLEK) Study: methods and findings to date. Cont Lens Anterior Eye 2007;30:223—32.
- Li SW, Li ZX, Shi WY, Zeng QY, Jin XM. Clinical features of 233 cases of keratoconus. Zhonghua Yan Ke Za Zhi 2005;41:610—3